BROOKLYN - One person was seriously hurt after a firecracker went off on a school bus in Flatbush. 

The bus made an emergency stop at Ocean Avenue and Dorchester Road at around 7:30 a.m. 

According to police, 11 people were taken to the hospital for observation and five others were treated at the scene. 

A Department of Education spokesperson says the bus was carrying students from the Brooklyn Dreams Charter School. 

The bus company reported that one or two children set off the firecracker.